Chapter 7. Sentiment Analysis – I Am Happy
Sentiment analysis or sentiment generation is one of the tasks in NLP. It is defined as the process of determining the sentiments behind a character sequence. It may be used to determine whether the speaker or the person expressing the textual thoughts is in a happy or sad mood, or it represents a neutral expression.
This chapter will include the following topics:
- Introducing sentiment analysis
- Sentiment analysis using NER
- Sentiment analysis using machine learning
- Evaluation of the NER system
Introducing sentiment analysis
Sentiment analysis may be defined as a task performed on natural languages. Here, computations are performed on the sentences or words expressed in natural language to determine whether they express a positive, negative, or a neutral sentiment. Sentiment analysis is a subjective task, since it provides the information about the text being expressed. Sentiment analysis may be defined as a classification problem in...
